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<?php
namespace PrestaShop\CircuitBreaker\Storage;
use PrestaShop\CircuitBreaker\Contract\StorageInterface;
use PrestaShop\CircuitBreaker\Contract\TransactionInterface;
use PrestaShop\CircuitBreaker\Exception\TransactionNotFoundException;
/**
* Very simple implementation of Storage using a simple PHP array.
*/
final class SimpleArray implements StorageInterface
{
/**
* @var array the circuit breaker transactions
*/
public static $transactions = [];
/**
* {@inheritdoc}
*/
public function saveTransaction($service, TransactionInterface $transaction)
{
$key = $this->getKey($service);
self::$transactions[$key] = $transaction;
return true;
}
/**
* {@inheritdoc}
*/
public function getTransaction($service)
{
$key = $this->getKey($service);
if ($this->hasTransaction($service)) {
return self::$transactions[$key];
}
throw new TransactionNotFoundException();
}
/**
* {@inheritdoc}
*/
public function hasTransaction($service)
{
$key = $this->getKey($service);
return array_key_exists($key, self::$transactions);
}
/**
* {@inheritdoc}
*/
public function clear()
{
self::$transactions = [];
return true;
}
/**
* Helper method to properly store the transaction.
*
* @param string $service the service URI
*
* @return string the transaction unique identifier
*/
private function getKey($service)
{
return md5($service);
}
}